USB adapter



FIG. 1 is a front, top and left perspective view of a USB adapter showing claimed design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a front, bottom and right perspective view thereof; and,

FIG. 9 is a bottom, front and right perspective view thereof.

The broken lines shown in FIGS. 1, 6, and 7 depict parts of the USB adapter, but form no part of the claimed design. 

CLAIM The ornamental design for a USB adapter, as shown and described. 